「Symposia on Systems Analysis in Forest Resources: A 50th Year Anniversary (1975-2024)」 (2024) Mathematical and Computational Forestry & Natural-Resource Sciences (MCFNS), 16(2), pp. 33–49 (17). 入手先: https://mcfns.com/index.php/Journal/article/view/16.4 (参照: 31 10月 2026).